.loader { background: #fff; background: radial-gradient(#222, #000); bottom: 0; left: 0; overflow: hidden;
  position: fixed; right: 0; top: 0; z-index: 99999; }

.loader-inner { bottom: 0; height: 60px; left: 0; margin: auto; position: absolute; right: 0; top: 0; width: 100px; }

.loader-line-wrap { animation: spin 2000ms cubic-bezier(.175, .885, .32, 1.275) infinite; box-sizing: border-box; height: 50px;
  left: 0; overflow: hidden; position: absolute; top: 0; transform-origin: 50% 100%; width: 100px; }
.loader-line { border: 4px solid transparent; border-radius: 100%; box-sizing: border-box; height: 100px; left: 0;
  margin: 0 auto; position: absolute; right: 0; top: 0; width: 100px; }
.loader-line-wrap:nth-child(1) { animation-delay: -50ms; }
.loader-line-wrap:nth-child(2) { animation-delay: -100ms; }
.loader-line-wrap:nth-child(3) { animation-delay: -150ms; }
.loader-line-wrap:nth-child(4) { animation-delay: -200ms; }
.loader-line-wrap:nth-child(5) { animation-delay: -250ms; }

.loader-line-wrap:nth-child(1) .loader-line { border-color: hsl(0, 80%, 60%); height: 90px; width: 90px; top: 7px; }
.loader-line-wrap:nth-child(2) .loader-line { border-color: hsl(60, 80%, 60%); height: 76px; width: 76px; top: 14px; }
.loader-line-wrap:nth-child(3) .loader-line { border-color: hsl(120, 80%, 60%); height: 62px; width: 62px; top: 21px; }
.loader-line-wrap:nth-child(4) .loader-line { border-color: hsl(180, 80%, 60%); height: 48px; width: 48px; top: 28px; }
.loader-line-wrap:nth-child(5) .loader-line { border-color: hsl(240, 80%, 60%); height: 34px; width: 34px; top: 35px; }
@keyframes spin {
  0%, 15% { transform: rotate(0); }
  100% { transform: rotate(360deg); } }